answersLogoWhite

0

What else can I help you with?

Continue Learning about Natural Sciences

What compares the brightness of stars as if they were the same distance from earth?

midorz


What variable of apparent brightness is eliminated when discussing absolute brightness?

The variable of distance is eliminated when discussing absolute brightness. Absolute brightness specifically refers to the inherent brightness of an astronomical object without the influence of its distance from the observer.


Relationship between stars distance to earth and luminosity?

Generally speaking, the apparent luminosity would be an inverse square relationship, which is to say, if the same star was at twice the distance, a quarter of the light would be reaching the observer. But absolute luminosity can of course vary without regard to distance from Earth - dim stars can be close, or bright stars distant, or vice-versa.


Is it possible for two regular stars to have the same absolute magnitude but differ in apparent magnitude?

One dimmer star can be closer than a brighter star that is far away. Light flux decreases as the square of the distance. A star that is three times as far away will have to shine nine times brighter than the closer star (absolute magnitude) to appear to have the same magnitude (apparent magnitude). Because apparent magnitude is the brightness of a star, as seen from Earth, whereas absolute magnitude is the brightness of a star as seen from the same distance - about 32.6 light years away.


Why must astronmers figure out a star's distance to calculate it's actual brightness?

For the same real brightness, at a larger distance it would look less bright. On the other hand, you may have two stars that look like they are the same brightness, but one might be million times brighter (in real brightness) than the other - which would be compensated by the fact that the brighter star is a thousand times farther away.

Related Questions

What compares the brightness of stars as if they were the same distance from earth?

midorz


Are the star in big dipper in the same brightness?

No. The stars are not only not the same brightness, they are not the same distance from us - they just "appear" to be as part of the optical illusion of earthbound astronomy. They are all of varying brightness, though fairly close in brightness overall.


If two stars have the same apparent magnitude are they the same distance from Earth?

No. Brighter distant stars can have the same apparent magnitude as fainter stars that are closer.(Absolute magnitude does not refer to actual brightness, but rather to what the brightness of a star would likely be at an arbitrary distance of 10 parsecs, rather than its actual distance.)


Is a star's absolute magnitude dependent on its distance from the observer?

No, a star's absolute magnitude is a measure of its intrinsic brightness regardless of its distance from the observer. It is a standardized measure that allows for comparison of the brightness of stars at a set distance.


Do stars have the same brightness and sizes?

No. Stars vary greatly in size and brightness.


What causes the apparent brightness or size of stars constellations and galaxies?

The size of stars depends on their mass and the stage of their life cycle. Constellations are just stars which happen to lie in the same general direction from Earth, and have nothing really to do with each other. Apparent brightess of a star or galaxy is the result of its intrinsic brightness and its distance from us.


How does the distance and size of a star impact its brightness?

If two stars have the same size and brightness, but one is further away, it will appear dimmer. The brightness of a star is inversely proportionate to the square of its distance. In other words, a star ten light years away will be four times dimmer than one just as bright (absolute magnitude) that is only five light years away. Larger stars also tend to be brighter, though most of the really big stars are red giants.


Stars in the night sky always maintain the same distance from what?

Stars in the night sky maintain the same distance from Earth. Despite their different distances from us, the stars appear to be at a fixed distance from each other when observed from our perspective on Earth.


What variable of apparent brightness is eliminated when discussing absolute brightness?

The variable of distance is eliminated when discussing absolute brightness. Absolute brightness specifically refers to the inherent brightness of an astronomical object without the influence of its distance from the observer.


What is the magnitude of a star if all stars were the same distance from earth?

Absolute magnitude


Relationship between stars distance to earth and luminosity?

Generally speaking, the apparent luminosity would be an inverse square relationship, which is to say, if the same star was at twice the distance, a quarter of the light would be reaching the observer. But absolute luminosity can of course vary without regard to distance from Earth - dim stars can be close, or bright stars distant, or vice-versa.


How do you draw a diagram showing which moon would be brightest from Jupiter?

The four main moons all look about the same brightness as seen from Earth, and they are all at about the same distance from the Earth. That means that their brightness seen from Jupiter would depend on their distances from Jupiter.

Trending Questions
What are the three general types of cellular reproduction? What sensors primarily operate in the EM spectrum just below the range of visible light? What time does the 2009 Superbpwl Start in CST? What is the name of the soil type that is from a location that experience high temperatures and high precipitation? Why does algae grow quickly with fertilizer? The amount of matter in an object compared to the space it takes up refers to? What is the absolute location and relative location of Ghana? What is sds-page used for? When you squeeze gas in a smaller space? How many silicon-30 atoms are found in this plate? If you were to tie your shoelace which muscle tissue would be involved? What organism is negatively affected by a high concentration of aluminium ions in the soil or water? How is hurricane sandy different from other hurricanes? Why do earthquakes and volcanic eruptions frequently occur in the same area? If you have 0.05 ml of an undiluted culture at a concentration of 3.6x10 6 CFU ml You then add 4.95 ml sterile diluent What is the dilution factor and what is the final concentration of cells? What is the most probable fate of a newly emerging virus that causes high mortality in its host? How many people have died in Somalia from war? Is vodka safe to use on cuts and scrapes as a disinfectant when hydrogen peroxide is not available? What does a seat belt have to do with Newton's first law of motion? Why do you think that nitrogen gas is the composition of dry air?